namespace ICRebuild.Core;

public sealed record DungeonSnapshot(bool Valid, uint Territory, byte DungeonId, int Floor)
{
    public static readonly DungeonSnapshot Empty = new(false, 0, 0, 0);
    public bool SpecialFloor => Valid && (Floor % 10 == 0 || (Floor == 99 && Territory is 1108 or 1290));
    public string Description => !Valid ? "不在有效深层迷宫实例中" : $"区域 {Territory} · 迷宫 {DungeonId} · {Floor} 层 · {(SpecialFloor ? "特殊层" : "普通层")}";
}

public static class Policies
{
    public static float FiniteClamp(float value, float min, float max, float fallback = 0) =>
        float.IsFinite(value) ? Math.Clamp(value, min, max) : Math.Clamp(fallback, min, max);
    public static float HeightDelta(bool ready, bool dungeonOnly, DungeonSnapshot dungeon, float amount) =>
        !ready || (dungeonOnly && (!dungeon.Valid || dungeon.Floor <= 0 || dungeon.SpecialFloor)) ? 0 : FiniteClamp(amount, -10, 10);
    public static bool BlockTimeline(uint timeline, IReadOnlySet<uint> list, bool blockListed) => list.Count > 0 && (blockListed ? list.Contains(timeline) : !list.Contains(timeline));
    public static bool IsMudra(int id) => id>=0 && NativeIds.MudraActions.Contains((uint)id);
    public static uint FallFlags(uint flags) => (flags & 0b11100000000) == 0 ? flags : (flags & ~0b11100000000u) | 2u;
}